C11111211113313112113313331333133313331312111113331322133313231323122121323311   >>    C1111121111331311211331333133313331333131211111333132213331323132312212132331   <<    C11111211113313112113313331333133313331312111113331322133313231323122121323313   >>      C11111211113313112113313331333133313331312111113331322133313231323122121323312   >>